Shingle



FIG. 1 is a front elevation view of a shingle;

FIG. 2 is a right side elevation view thereof, the left side elevation view being a mirror image of the right side elevation view;

FIG. 3 is a bottom plan view thereof; and,

FIG. 4 is a front elevation view of another embodiment of a shingle. The right and left side elevation views are the same as the shingle of FIG. 1. 

CLAIM The ornamental design for a shingle, as shown and described. 